Universal joint.



L. SGHWITZER.

' UNIVERSAL JOINT. APPLICATION FILED mn.z2,19oe.

Patented Apr. 26, 1910.

H ul- LVVENTOR. L o u, is 3o7vwiT'zer.

IVITNESSES:

'f, rnfn STATES PATENT o en SCHWITZER, F INDIANAPOLIS, INDIANA.

UNIVERSAL JCINT Specification of Letters Patent.

Application filed March 22, 1909. Serial No. 484,857.

' Patented Apr. 26,1910.

'clear, and exact description thereof, referonce being had to the accompanying drawings, in which like numerals refer to like Parts" i t The object of this invention is to provide a strong universal joint suitable in power transmitting shutting or like mechanism, and capable of enduring considerable torsional-strain, and which is also simple in construction and easil Y manipulated.

The chief feature or the invention consists in proi'iding theends of the joining members with a air of similarly formed oppositely looat' rojcct-ions that when interlocked are E0 arge as to nearly meet each other, leayi g a space between them in which plugs'are i lserted that areheld fixed with reference t -o i1e projection and are slidable with referelufe-to the adjacent rejection, and suitable means are provided or spacing said projections and plugs apart and also for binding the parts together.

The nature'ol-f'the invention will be understood from the ahcompanying drawings andthe following descri tlon and claims I In the drawings igure 1 is'a plan view of one type of sit-id universal joint, the outline of the parts fwithin-the band being indicated by dottecljllines. Fi 2 is a central transverse sectio'li throu h t e same.

Inthe type of {joint s own in Figs. 1 and 2, the end of 'e uh member 10 and 11 has two oppositely] a'ted projections, the projections from th member 10 being marked 110 and those. tom the member 11 being markedlll. Tli'ese projections are adapted to,in a sense, interlock each other-as indicated inFigsl. 1 and 2, but so there will be Qconsid'erable {space between them, as indicated at 12 in Fig. l to permit flexibility of the joint and the insertion of the plugs-13.

orm, ex-

face. The-fiat face-of the plugslfits against the corresponding flat face of one of the L "projections, and the curved surface of the plugs fits in a similarly curved recess 14 in the adjacentprojection. Thislatterfeatureholds the lugs from longitudinal movement, that is, t eplug 13, shown in Fig. l, fits in the sa-i movement with reference to the adjacent the projections apart as indicated.

similarly formed, each-having an external spherically disposed surface, so that when they are fitted together they will make a sphericallv disposed contour for the joint when in (place prevents the jointfrom being separate This band is split transversel and provided with overlapping ends so it can be putin place, and is held in position by lugs 17 from the plugs, said lugs projecting through corresponding holes in the band, and by a longer lug 18 that, projects is threaded for a nut 19.

side surfaces to one side and parallel with the diametric line in the joint, excepting on the proections are also flat and to one suificiently mm the adjaceht surfaces of s ball also spaces joint is flexible m :1 directions as the flat permitted by t e spacing 12 and that the strengthof the joint for use particularly in a rotary shaft construction; is very great because of the relatively large dimensions and strengiliof the projections 1:10 and 111., What ;I claim as my invention and'desiref to secure by Letters Patent is v -.1. A universal, joint includm two members With a pair of oppositely located projections extending from the end oieach and so thatthe projections onthe two-membersmay interlock each of said pro'ections-liaving one side surface flat and t e other side surface recessed, plugs fitting between the adjacent surfaces of said pro ections and in the recess thereofand with e flattened surface bearing against the flattened surface of the projections so as to beslidable thereon, the external surfaces of said projections being spherically disposed, a spherically all through overlapp' g ends'ofthe band and The projections 110 and 111- ,have flat the recesses 14: for the plugs 13.' The ends recess 14 of the projection 1 11, and has no longitudinal movement withreference to, projection, but it does have a sliding projection 110, These plugs likewise space The projections 110 and 111 are all over whic i the band. 16 is secured and which side of an parallel with the diametric line through the oint and are held spaced apart the inembers 10 and 11 b a ball 20 centrally located in the joint. Th1

and holds apart, when ineplace, the plugs 13.

From the foregoing it is obvious thatthe surfaces of the plugs .can slide upon the flat surfaces of the ro ections within the. limits used band transversely surrounding the oint,and means for securing said band to said plugs.

2. A universal joint includin 'two inemhers with a pair of oppositely ocated projections extending from the end of each and so that the projections on the two members may interlock each of said rojections having one side surface flat and the other side surface recessed, plugs fitting between the adjacent surfaces of said pro]ections and in the recess thereof and with a flattened surface bearing against the flattened surface of the projections so as to be slidable thereon, the external surfaces of said projections hein s )herically disposed, at spherically dispose and transversely surrounding the joint, said band having holes through it,

and lugs extending from the plugs through said holes to hold the band in place.

3. A universal joint including two memhers with a pan-of oppositely located prov adjacent surfaces of said pro ections and in the recess thereof and with a flattened sur-- face bearing againstthe flattened surface of the, proi'ections so as to be slidahie thereon,

a ball. ocated centrally in the joint for spacing the plugs and projections apart, andmeans for holding saidprojections and plugs-together.

In witness whereof, I have hereunto atiixed my signature in the presence of the witnesses herein named.

- LOUIS SCHW'ITZER. lVitnesses: l

G. H. BOINK, O. M. L'IGLAUGHLIN. 

